Sharpener



FIG. 1 is an upper perspective view of the sharpener showing my design;

FIG. 2 is a side elevation view thereof;

FIG. 3 is an opposite side view thereof;

FIG. 4 is an end elevation view thereof;

FIG. 5 is an opposite end elevation view thereof;

FIG. 6 is a top plan view; and,

FIG. 7 is a bottom plan view.

The device sharpens blades, such as knife blades. The broken lines in FIG. 7 surround two bottom surfaces of the sharpener, within which no claim is made. 

CLAIM The ornamental design for a sharpener, as shown and described. 